isl_ctx.c

   1 /*
   2  * Copyright 2008-2009 Katholieke Universiteit Leuven
   3  *
   4  * Use of this software is governed by the GNU LGPLv2.1 license
   5  *
   6  * Written by Sven Verdoolaege, K.U.Leuven, Departement
   7  * Computerwetenschappen, Celestijnenlaan 200A, B-3001 Leuven, Belgium
   8  */
   9
  10 #include <isl_ctx_private.h>
  11 #include <isl/vec.h>
  12
  13 static struct isl_options *find_nested_options(struct isl_args *args,
  14         void *opt, struct isl_args *wanted)
  15 {
  16         int i;
  17         struct isl_options *options;
  18
  19         if (args == wanted)
  20                 return opt;
  21
  22         for (i = 0; args->args[i].type != isl_arg_end; ++i) {
  23                 if (args->args[i].type != isl_arg_child)
  24                         continue;
  25                 options = find_nested_options(args->args[i].u.child.child,
  26                             *(void **)(((char *)opt) + args->args[i].offset),
  27                             wanted);
  28                 if (options)
  29                         return options;
  30         }
  31
  32         return NULL;
  33 }
  34
  35 static struct isl_options *find_nested_isl_options(struct isl_args *args,
  36         void *opt)
  37 {
  38         return find_nested_options(args, opt, &isl_options_args);
  39 }
  40
  41 void *isl_ctx_peek_options(isl_ctx *ctx, struct isl_args *args)
  42 {
  43         if (!ctx)
  44                 return NULL;
  45         return find_nested_options(ctx->user_args, ctx->user_opt, args);
  46 }
  47
  48 isl_ctx *isl_ctx_alloc_with_options(struct isl_args *args, void *user_opt)
  49 {
  50         struct isl_ctx *ctx = NULL;
  51         struct isl_options *opt = NULL;
  52         int opt_allocated = 0;
  53
  54         if (!user_opt)
  55                 return NULL;
  56
  57         opt = find_nested_isl_options(args, user_opt);
  58         if (!opt) {
  59                 opt = isl_options_new_with_defaults();
  60                 if (!opt)
  61                         goto error;
  62                 opt_allocated = 1;
  63         }
  64
  65         ctx = isl_calloc_type(NULL, struct isl_ctx);
  66         if (!ctx)
  67                 goto error;
  68
  69         if (isl_hash_table_init(ctx, &ctx->id_table, 0))
  70                 goto error;
  71
  72         ctx->stats = isl_calloc_type(ctx, struct isl_stats);
  73         if (!ctx->stats)
  74                 goto error;
  75
  76         ctx->user_args = args;
  77         ctx->user_opt = user_opt;
  78         ctx->opt_allocated = opt_allocated;
  79         ctx->opt = opt;
  80         ctx->ref = 0;
  81
  82         isl_int_init(ctx->zero);
  83         isl_int_set_si(ctx->zero, 0);
  84
  85         isl_int_init(ctx->one);
  86         isl_int_set_si(ctx->one, 1);
  87
  88         isl_int_init(ctx->two);
  89         isl_int_set_si(ctx->two, 2);
  90
  91         isl_int_init(ctx->negone);
  92         isl_int_set_si(ctx->negone, -1);
  93
  94         isl_int_init(ctx->normalize_gcd);
  95
  96         ctx->n_cached = 0;
  97         ctx->n_miss = 0;
  98
  99         ctx->error = isl_error_none;
 100
 101         return ctx;
 102 error:
 103         isl_args_free(args, user_opt);
 104         if (opt_allocated)
 105                 isl_options_free(opt);
 106         free(ctx);
 107         return NULL;
 108 }
 109
 110 struct isl_ctx *isl_ctx_alloc()
 111 {
 112         struct isl_options *opt;
 113
 114         opt = isl_options_new_with_defaults();
 115
 116         return isl_ctx_alloc_with_options(&isl_options_args, opt);
 117 }
 118
 119 void isl_ctx_ref(struct isl_ctx *ctx)
 120 {
 121         ctx->ref++;
 122 }
 123
 124 void isl_ctx_deref(struct isl_ctx *ctx)
 125 {
 126         isl_assert(ctx, ctx->ref > 0, return);
 127         ctx->ref--;
 128 }
 129
 130 void isl_ctx_free(struct isl_ctx *ctx)
 131 {
 132         if (!ctx)
 133                 return;
 134         isl_assert(ctx, ctx->ref == 0, return);
 135         isl_hash_table_clear(&ctx->id_table);
 136         isl_blk_clear_cache(ctx);
 137         isl_int_clear(ctx->zero);
 138         isl_int_clear(ctx->one);
 139         isl_int_clear(ctx->two);
 140         isl_int_clear(ctx->negone);
 141         isl_int_clear(ctx->normalize_gcd);
 142         isl_args_free(ctx->user_args, ctx->user_opt);
 143         if (ctx->opt_allocated)
 144                 free(ctx->opt);
 145         free(ctx->stats);
 146         free(ctx);
 147 }
 148
 149 struct isl_options *isl_ctx_options(isl_ctx *ctx)
 150 {
 151         if (!ctx)
 152                 return NULL;
 153         return ctx->opt;
 154 }
 155
 156 enum isl_error isl_ctx_last_error(isl_ctx *ctx)
 157 {
 158         return ctx->error;
 159 }
 160
 161 void isl_ctx_reset_error(isl_ctx *ctx)
 162 {
 163         ctx->error = isl_error_none;
 164 }
 165
 166 void isl_ctx_set_error(isl_ctx *ctx, enum isl_error error)
 167 {
 168         if (ctx)
 169                 ctx->error = error;
 170 }
 171
 172 void isl_ctx_abort(isl_ctx *ctx)
 173 {
 174         if (ctx)
 175                 ctx->abort = 1;
 176 }
 177
 178 void isl_ctx_resume(isl_ctx *ctx)
 179 {
 180         if (ctx)
 181                 ctx->abort = 0;
 182 }
 183
 184 int isl_ctx_aborted(isl_ctx *ctx)
 185 {
 186         return ctx ? ctx->abort : -1;
 187 }
 188
 189 int isl_ctx_parse_options(isl_ctx *ctx, int argc, char **argv, unsigned flags)
 190 {
 191         if (!ctx)
 192                 return -1;
 193         return isl_args_parse(ctx->user_args, argc, argv, ctx->user_opt, flags);
 194 }